hw/mips/mips_jazz.c

   1 /*
   2  * QEMU MIPS Jazz support
   3  *
   4  * Copyright (c) 2007-2008 Hervé Poussineau
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "qemu-common.h"
  27 #include "hw/mips/mips.h"
  28 #include "hw/mips/cpudevs.h"
  29 #include "hw/i386/pc.h"
  30 #include "hw/dma/i8257.h"
  31 #include "hw/char/serial.h"
  32 #include "hw/char/parallel.h"
  33 #include "hw/isa/isa.h"
  34 #include "hw/block/fdc.h"
  35 #include "sysemu/sysemu.h"
  36 #include "sysemu/arch_init.h"
  37 #include "hw/boards.h"
  38 #include "net/net.h"
  39 #include "hw/scsi/esp.h"
  40 #include "hw/mips/bios.h"
  41 #include "hw/loader.h"
  42 #include "hw/rtc/mc146818rtc.h"
  43 #include "hw/timer/i8254.h"
  44 #include "hw/display/vga.h"
  45 #include "hw/audio/pcspk.h"
  46 #include "hw/input/i8042.h"
  47 #include "hw/sysbus.h"
  48 #include "exec/address-spaces.h"
  49 #include "sysemu/qtest.h"
  50 #include "sysemu/reset.h"
  51 #include "qapi/error.h"
  52 #include "qemu/error-report.h"
  53 #include "qemu/help_option.h"
  54
  55 enum jazz_model_e
  56 {
  57     JAZZ_MAGNUM,
  58     JAZZ_PICA61,
  59 };
  60
  61 static void main_cpu_reset(void *opaque)
  62 {
  63     MIPSCPU *cpu = opaque;
  64
  65     cpu_reset(CPU(cpu));
  66 }
  67
  68 static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
  69 {
  70     uint8_t val;
  71     address_space_read(&address_space_memory, 0x90000071,
  72                        MEMTXATTRS_UNSPECIFIED, &val, 1);
  73     return val;
  74 }
  75
  76 static void rtc_write(void *opaque, hwaddr addr,
  77                       uint64_t val, unsigned size)
  78 {
  79     uint8_t buf = val & 0xff;
  80     address_space_write(&address_space_memory, 0x90000071,
  81                         MEMTXATTRS_UNSPECIFIED, &buf, 1);
  82 }
  83
  84 static const MemoryRegionOps rtc_ops = {
  85     .read = rtc_read,
  86     .write = rtc_write,
  87     .endianness = DEVICE_NATIVE_ENDIAN,
  88 };
  89
  90 static uint64_t dma_dummy_read(void *opaque, hwaddr addr,
  91                                unsigned size)
  92 {
  93     /* Nothing to do. That is only to ensure that
  94      * the current DMA acknowledge cycle is completed. */
  95     return 0xff;
  96 }
  97
  98 static void dma_dummy_write(void *opaque, hwaddr addr,
  99                             uint64_t val, unsigned size)
 100 {
 101     /* Nothing to do. That is only to ensure that
 102      * the current DMA acknowledge cycle is completed. */
 103 }
 104
 105 static const MemoryRegionOps dma_dummy_ops = {
 106     .read = dma_dummy_read,
 107     .write = dma_dummy_write,
 108     .endianness = DEVICE_NATIVE_ENDIAN,
 109 };
 110
 111 #define MAGNUM_BIOS_SIZE_MAX 0x7e000
 112 #define MAGNUM_BIOS_SIZE (BIOS_SIZE < MAGNUM_BIOS_SIZE_MAX ? BIOS_SIZE : MAGNUM_BIOS_SIZE_MAX)
 113
 114 static void (*real_do_transaction_failed)(CPUState *cpu, hwaddr physaddr,
 115                                           vaddr addr, unsigned size,
 116                                           MMUAccessType access_type,
 117                                           int mmu_idx, MemTxAttrs attrs,
 118                                           MemTxResult response,
 119                                           uintptr_t retaddr);
 120
 121 static void mips_jazz_do_transaction_failed(CPUState *cs, hwaddr physaddr,
 122                                             vaddr addr, unsigned size,
 123                                             MMUAccessType access_type,
 124                                             int mmu_idx, MemTxAttrs attrs,
 125                                             MemTxResult response,
 126                                             uintptr_t retaddr)
 127 {
 128     if (access_type != MMU_INST_FETCH) {
 129         /* ignore invalid access (ie do not raise exception) */
 130         return;
 131     }
 132     (*real_do_transaction_failed)(cs, physaddr, addr, size, access_type,
 133                                   mmu_idx, attrs, response, retaddr);
 134 }
 135
 136 static void mips_jazz_init(MachineState *machine,
 137                            enum jazz_model_e jazz_model)
 138 {
 139     MemoryRegion *address_space = get_system_memory();
 140     char *filename;
 141     int bios_size, n;
 142     MIPSCPU *cpu;
 143     CPUClass *cc;
 144     CPUMIPSState *env;
 145     qemu_irq *i8259;
 146     rc4030_dma *dmas;
 147     IOMMUMemoryRegion *rc4030_dma_mr;
 148     MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
 149     MemoryRegion *isa_io = g_new(MemoryRegion, 1);
 150     MemoryRegion *rtc = g_new(MemoryRegion, 1);
 151     MemoryRegion *i8042 = g_new(MemoryRegion, 1);
 152     MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
 153     NICInfo *nd;
 154     DeviceState *dev, *rc4030;
 155     SysBusDevice *sysbus;
 156     ISABus *isa_bus;
 157     ISADevice *pit;
 158     DriveInfo *fds[MAX_FD];
 159     MemoryRegion *ram = g_new(MemoryRegion, 1);
 160     MemoryRegion *bios = g_new(MemoryRegion, 1);
 161     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
 162     SysBusESPState *sysbus_esp;
 163     ESPState *esp;
 164
 165     /* init CPUs */
 166     cpu = MIPS_CPU(cpu_create(machine->cpu_type));
 167     env = &cpu->env;
 168     qemu_register_reset(main_cpu_reset, cpu);
 169
 170     /*
 171      * Chipset returns 0 in invalid reads and do not raise data exceptions.
 172      * However, we can't simply add a global memory region to catch
 173      * everything, as this would make all accesses including instruction
 174      * accesses be ignored and not raise exceptions.
 175      * So instead we hijack the do_transaction_failed method on the CPU, and
 176      * do not raise exceptions for data access.
 177      *
 178      * NOTE: this behaviour of raising exceptions for bad instruction
 179      * fetches but not bad data accesses was added in commit 54e755588cf1e9
 180      * to restore behaviour broken by c658b94f6e8c206, but it is not clear
 181      * whether the real hardware behaves this way. It is possible that
 182      * real hardware ignores bad instruction fetches as well -- if so then
 183      * we could replace this hijacking of CPU methods with a simple global
 184      * memory region that catches all memory accesses, as we do on Malta.
 185      */
 186     cc = CPU_GET_CLASS(cpu);
 187     real_do_transaction_failed = cc->do_transaction_failed;
 188     cc->do_transaction_failed = mips_jazz_do_transaction_failed;
 189
 190     /* allocate RAM */
 191     memory_region_allocate_system_memory(ram, NULL, "mips_jazz.ram",
 192                                          machine->ram_size);
 193     memory_region_add_subregion(address_space, 0, ram);
 194
 195     memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE,
 196                            &error_fatal);
 197     memory_region_set_readonly(bios, true);
 198     memory_region_init_alias(bios2, NULL, "mips_jazz.bios", bios,
 199                              0, MAGNUM_BIOS_SIZE);
 200     memory_region_add_subregion(address_space, 0x1fc00000LL, bios);
 201     memory_region_add_subregion(address_space, 0xfff00000LL, bios2);
 202
 203     /* load the BIOS image. */
 204     if (bios_name == NULL)
 205         bios_name = BIOS_FILENAME;
 206     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 207     if (filename) {
 208         bios_size = load_image_targphys(filename, 0xfff00000LL,
 209                                         MAGNUM_BIOS_SIZE);
 210         g_free(filename);
 211     } else {
 212         bios_size = -1;
 213     }
 214     if ((bios_size < 0 || bios_size > MAGNUM_BIOS_SIZE) && !qtest_enabled()) {
 215         error_report("Could not load MIPS bios '%s'", bios_name);
 216         exit(1);
 217     }
 218
 219     /* Init CPU internal devices */
 220     cpu_mips_irq_init_cpu(cpu);
 221     cpu_mips_clock_init(cpu);
 222
 223     /* Chipset */
 224     rc4030 = rc4030_init(&dmas, &rc4030_dma_mr);
 225     sysbus = SYS_BUS_DEVICE(rc4030);
 226     sysbus_connect_irq(sysbus, 0, env->irq[6]);
 227     sysbus_connect_irq(sysbus, 1, env->irq[3]);
 228     memory_region_add_subregion(address_space, 0x80000000,
 229                                 sysbus_mmio_get_region(sysbus, 0));
 230     memory_region_add_subregion(address_space, 0xf0000000,
 231                                 sysbus_mmio_get_region(sysbus, 1));
 232     memory_region_init_io(dma_dummy, NULL, &dma_dummy_ops, NULL, "dummy_dma", 0x1000);
 233     memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
 234
 235     /* ISA bus: IO space at 0x90000000, mem space at 0x91000000 */
 236     memory_region_init(isa_io, NULL, "isa-io", 0x00010000);
 237     memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
 238     memory_region_add_subregion(address_space, 0x90000000, isa_io);
 239     memory_region_add_subregion(address_space, 0x91000000, isa_mem);
 240     isa_bus = isa_bus_new(NULL, isa_mem, isa_io, &error_abort);
 241
 242     /* ISA devices */
 243     i8259 = i8259_init(isa_bus, env->irq[4]);
 244     isa_bus_irqs(isa_bus, i8259);
 245     i8257_dma_init(isa_bus, 0);
 246     pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
 247     pcspk_init(isa_bus, pit);
 248
 249     /* Video card */
 250     switch (jazz_model) {
 251     case JAZZ_MAGNUM:
 252         dev = qdev_create(NULL, "sysbus-g364");
 253         qdev_init_nofail(dev);
 254         sysbus = SYS_BUS_DEVICE(dev);
 255         sysbus_mmio_map(sysbus, 0, 0x60080000);
 256         sysbus_mmio_map(sysbus, 1, 0x40000000);
 257         sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 3));
 258         {
 259             /* Simple ROM, so user doesn't have to provide one */
 260             MemoryRegion *rom_mr = g_new(MemoryRegion, 1);
 261             memory_region_init_ram(rom_mr, NULL, "g364fb.rom", 0x80000,
 262                                    &error_fatal);
 263             memory_region_set_readonly(rom_mr, true);
 264             uint8_t *rom = memory_region_get_ram_ptr(rom_mr);
 265             memory_region_add_subregion(address_space, 0x60000000, rom_mr);
 266             rom[0] = 0x10; /* Mips G364 */
 267         }
 268         break;
 269     case JAZZ_PICA61:
 270         isa_vga_mm_init(0x40000000, 0x60000000, 0, get_system_memory());
 271         break;
 272     default:
 273         break;
 274     }
 275
 276     /* Network controller */
 277     for (n = 0; n < nb_nics; n++) {
 278         nd = &nd_table[n];
 279         if (!nd->model)
 280             nd->model = g_strdup("dp83932");
 281         if (strcmp(nd->model, "dp83932") == 0) {
 282             qemu_check_nic_model(nd, "dp83932");
 283
 284             dev = qdev_create(NULL, "dp8393x");
 285             qdev_set_nic_properties(dev, nd);
 286             qdev_prop_set_uint8(dev, "it_shift", 2);
 287             qdev_prop_set_ptr(dev, "dma_mr", rc4030_dma_mr);
 288             qdev_init_nofail(dev);
 289             sysbus = SYS_BUS_DEVICE(dev);
 290             sysbus_mmio_map(sysbus, 0, 0x80001000);
 291             sysbus_mmio_map(sysbus, 1, 0x8000b000);
 292             sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 4));
 293             break;
 294         } else if (is_help_option(nd->model)) {
 295             error_report("Supported NICs: dp83932");
 296             exit(1);
 297         } else {
 298             error_report("Unsupported NIC: %s", nd->model);
 299             exit(1);
 300         }
 301     }
 302
 303     /* SCSI adapter */
 304     dev = qdev_create(NULL, TYPE_ESP);
 305     sysbus_esp = ESP_STATE(dev);
 306     esp = &sysbus_esp->esp;
 307     esp->dma_memory_read = rc4030_dma_read;
 308     esp->dma_memory_write = rc4030_dma_write;
 309     esp->dma_opaque = dmas[0];
 310     sysbus_esp->it_shift = 0;
 311     /* XXX for now until rc4030 has been changed to use DMA enable signal */
 312     esp->dma_enabled = 1;
 313     qdev_init_nofail(dev);
 314
 315     sysbus = SYS_BUS_DEVICE(dev);
 316     sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(rc4030, 5));
 317     sysbus_mmio_map(sysbus, 0, 0x80002000);
 318
 319     scsi_bus_legacy_handle_cmdline(&esp->bus);
 320
 321     /* Floppy */
 322     for (n = 0; n < MAX_FD; n++) {
 323         fds[n] = drive_get(IF_FLOPPY, 0, n);
 324     }
 325     /* FIXME: we should enable DMA with a custom IsaDma device */
 326     fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), -1, 0x80003000, fds);
 327
 328     /* Real time clock */
 329     mc146818_rtc_init(isa_bus, 1980, NULL);
 330     memory_region_init_io(rtc, NULL, &rtc_ops, NULL, "rtc", 0x1000);
 331     memory_region_add_subregion(address_space, 0x80004000, rtc);
 332
 333     /* Keyboard (i8042) */
 334     i8042_mm_init(qdev_get_gpio_in(rc4030, 6), qdev_get_gpio_in(rc4030, 7),
 335                   i8042, 0x1000, 0x1);
 336     memory_region_add_subregion(address_space, 0x80005000, i8042);
 337
 338     /* Serial ports */
 339     if (serial_hd(0)) {
 340         serial_mm_init(address_space, 0x80006000, 0,
 341                        qdev_get_gpio_in(rc4030, 8), 8000000/16,
 342                        serial_hd(0), DEVICE_NATIVE_ENDIAN);
 343     }
 344     if (serial_hd(1)) {
 345         serial_mm_init(address_space, 0x80007000, 0,
 346                        qdev_get_gpio_in(rc4030, 9), 8000000/16,
 347                        serial_hd(1), DEVICE_NATIVE_ENDIAN);
 348     }
 349
 350     /* Parallel port */
 351     if (parallel_hds[0])
 352         parallel_mm_init(address_space, 0x80008000, 0,
 353                          qdev_get_gpio_in(rc4030, 0), parallel_hds[0]);
 354
 355     /* FIXME: missing Jazz sound at 0x8000c000, rc4030[2] */
 356
 357     /* NVRAM */
 358     dev = qdev_create(NULL, "ds1225y");
 359     qdev_init_nofail(dev);
 360     sysbus = SYS_BUS_DEVICE(dev);
 361     sysbus_mmio_map(sysbus, 0, 0x80009000);
 362
 363     /* LED indicator */
 364     sysbus_create_simple("jazz-led", 0x8000f000, NULL);
 365
 366     g_free(dmas);
 367 }
 368
 369 static
 370 void mips_magnum_init(MachineState *machine)
 371 {
 372     mips_jazz_init(machine, JAZZ_MAGNUM);
 373 }
 374
 375 static
 376 void mips_pica61_init(MachineState *machine)
 377 {
 378     mips_jazz_init(machine, JAZZ_PICA61);
 379 }
 380
 381 static void mips_magnum_class_init(ObjectClass *oc, void *data)
 382 {
 383     MachineClass *mc = MACHINE_CLASS(oc);
 384
 385     mc->desc = "MIPS Magnum";
 386     mc->init = mips_magnum_init;
 387     mc->block_default_type = IF_SCSI;
 388     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
 389 }
 390
 391 static const TypeInfo mips_magnum_type = {
 392     .name = MACHINE_TYPE_NAME("magnum"),
 393     .parent = TYPE_MACHINE,
 394     .class_init = mips_magnum_class_init,
 395 };
 396
 397 static void mips_pica61_class_init(ObjectClass *oc, void *data)
 398 {
 399     MachineClass *mc = MACHINE_CLASS(oc);
 400
 401     mc->desc = "Acer Pica 61";
 402     mc->init = mips_pica61_init;
 403     mc->block_default_type = IF_SCSI;
 404     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
 405 }
 406
 407 static const TypeInfo mips_pica61_type = {
 408     .name = MACHINE_TYPE_NAME("pica61"),
 409     .parent = TYPE_MACHINE,
 410     .class_init = mips_pica61_class_init,
 411 };
 412
 413 static void mips_jazz_machine_init(void)
 414 {
 415     type_register_static(&mips_magnum_type);
 416     type_register_static(&mips_pica61_type);
 417 }
 418
 419 type_init(mips_jazz_machine_init)